<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>首页</title>
</head>
<body>
测试手动映射
<br>
<form action="/login" method="post" enctype="multipart/form-data">
    <div th:text="${user.getUsername()}">这是显示欢迎信息</div>
</form>
</body>
</html>